The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 1997
Filed:
Mar. 20, 1995
Scot M Turner, Marietta, OH (US);
James S Ritscher, Marietta, OH (US);
Michael Hallden-Abberton, Maple Glen, PA (US);
Donald McLeod, Jr, Briarcliff Manor, NY (US);
OSi Specialties, Inc., Danbury, CT (US);
Abstract
The present invention describes a method for inhibiting the polymerization of unsaturated silanes by the addition of a non-aromatic stable free radical during any of the steps of the formation of the desired silane, the purification of the desired silane, and to the desired silanes, as well as compositions of the inhibitors and the silanes. Particular classes of silanes to be inhibited include acryloxy-, methacryloxy-, and vinyl- functional silanes. The free radicals for use as inhibitors include various nitroxides. The free radicals taught herein are effective as inhibitors at elevated temperatures, for extended periods of time, and even in the absence of molecular oxygen.